The CertiPath Directory service offers hosting of cross-certificates of Enterprise CAs and certificates of the enterprise CAs certified by the CertiPath Common Root CA (CRCA). It also hosts the current trust status for these organizations through publication of no longer trusted certificates to the Authority Revocation List (ARL).

These cross-certificates are published in the LDAP directories of both CertiPath and the Enterprise that has been cross-certified. CertiPath provides LDAP access and LDAP referral service to relying parties who wish to discover and process a Trust Path. As noted, an exchange of the cross-certificates by the Bridge and the enterprise CA establishes the trust framework that can be used by relying parties in establishing the Trust Path. CertiPath's directory supports LDAP and HTTP but does not support x.500 Directory Access Protocol (DAP). CertiPath members minimally support HTTP access to their directories as a common requirement.